robots/score.c

   1 /*      $NetBSD: score.c,v 1.22 2009/08/03 06:04:12 dholland Exp $      */
   2
   3 /*
   4  * Copyright (c) 1980, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)score.c     8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: score.c,v 1.22 2009/08/03 06:04:12 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <curses.h>
  42 #include <err.h>
  43 #include <fcntl.h>
  44 #include <pwd.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49 #include "robots.h"
  50 #include "pathnames.h"
  51
  52 const char *Scorefile = _PATH_SCORE;
  53
  54 int Max_per_uid = MAX_PER_UID;
  55
  56 static SCORE Top[MAXSCORES];
  57
  58 static uint32_t numscores, max_uid;
  59
  60 /*
  61  * read_score:
  62  *      Read the score file in MI format
  63  */
  64 static void
  65 read_score(int inf)
  66 {
  67         SCORE *scp;
  68
  69         if (read(inf, &max_uid, sizeof max_uid) == sizeof max_uid &&
  70             read(inf, Top, sizeof Top) == sizeof Top) {
  71                 max_uid = ntohl(max_uid);
  72                 for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
  73                          scp->s_uid = ntohl(scp->s_uid);
  74                          scp->s_score = ntohl(scp->s_score);
  75                          scp->s_auto = ntohl(scp->s_auto);
  76                          scp->s_level = ntohl(scp->s_level);
  77                 }
  78         }
  79         else {
  80                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
  81                         scp->s_score = 0;
  82                 max_uid = Max_per_uid;
  83         }
  84 }
  85
  86 /*
  87  * write_score:
  88  *      Write the score file in MI format
  89  */
  90 static void
  91 write_score(int inf)
  92 {
  93         SCORE *scp;
  94
  95         lseek(inf, 0L, SEEK_SET);
  96
  97         max_uid = htonl(max_uid);
  98         write(inf, &max_uid, sizeof max_uid);
  99
 100         for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
 101                  scp->s_uid = htonl(scp->s_uid);
 102                  scp->s_score = htonl(scp->s_score);
 103                  scp->s_auto = htonl(scp->s_auto);
 104                  scp->s_level = htonl(scp->s_level);
 105         }
 106
 107         write(inf, Top, sizeof Top);
 108 }
 109
 110
 111 /*
 112  * score:
 113  *      Post the player's score, if reasonable, and then print out the
 114  *      top list.
 115  */
 116 void
 117 score(int score_wfd)
 118 {
 119         int inf = score_wfd;
 120         SCORE *scp;
 121         uint32_t uid;
 122         bool done_show = false;
 123
 124         Newscore = false;
 125         if (inf < 0)
 126                 return;
 127
 128         read_score(inf);
 129
 130         uid = getuid();
 131         if (Top[MAXSCORES-1].s_score <= Score) {
 132                 numscores = 0;
 133                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 134                         if ((scp->s_uid == uid && ++numscores == max_uid)) {
 135                                 if (scp->s_score > Score)
 136                                         break;
 137                                 scp->s_score = Score;
 138                                 scp->s_uid = uid;
 139                                 scp->s_auto = Auto_bot;
 140                                 scp->s_level = Level;
 141                                 set_name(scp);
 142                                 Newscore = true;
 143                                 break;
 144                         }
 145                 if (scp == &Top[MAXSCORES]) {
 146                         Top[MAXSCORES-1].s_score = Score;
 147                         Top[MAXSCORES-1].s_uid = uid;
 148                         Top[MAXSCORES-1].s_auto = Auto_bot;
 149                         Top[MAXSCORES-1].s_level = Level;
 150                         set_name(&Top[MAXSCORES-1]);
 151                         Newscore = true;
 152                 }
 153                 if (Newscore)
 154                         qsort(Top, MAXSCORES, sizeof Top[0], cmp_sc);
 155         }
 156
 157         if (!Newscore) {
 158                 Full_clear = false;
 159                 lseek(inf, 0, SEEK_SET);
 160                 return;
 161         }
 162         else
 163                 Full_clear = true;
 164
 165         move(1, 15);
 166         printw("%5.5s %5.5s %-9.9s %-8.8s %5.5s", "Rank", "Score", "User",
 167             " ", "Level");
 168
 169         for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
 170                 if (scp->s_score == 0)
 171                         break;
 172                 move((scp - Top) + 2, 15);
 173                 if (!done_show && scp->s_uid == uid && scp->s_score == Score)
 174                         standout();
 175                 printw("%5ld %5d %-8.8s %-9.9s %5d",
 176                     (long)(scp - Top) + 1, scp->s_score, scp->s_name,
 177                     scp->s_auto ? "(autobot)" : "", scp->s_level);
 178                 if (!done_show && scp->s_uid == uid && scp->s_score == Score) {
 179                         standend();
 180                         done_show = true;
 181                 }
 182         }
 183         Num_scores = scp - Top;
 184         refresh();
 185
 186         if (Newscore) {
 187                 write_score(inf);
 188         }
 189         lseek(inf, 0, SEEK_SET);
 190 }
 191
 192 void
 193 set_name(SCORE *scp)
 194 {
 195         struct passwd *pp;
 196
 197         if ((pp = getpwuid(scp->s_uid)) == NULL)
 198                 strncpy(scp->s_name, "???", MAXNAME);
 199         else
 200                 strncpy(scp->s_name, pp->pw_name, MAXNAME);
 201 }
 202
 203 /*
 204  * cmp_sc:
 205  *      Compare two scores.
 206  */
 207 int
 208 cmp_sc(const void *s1, const void *s2)
 209 {
 210         return ((const SCORE *)s2)->s_score - ((const SCORE *)s1)->s_score;
 211 }
 212
 213 /*
 214  * show_score:
 215  *      Show the score list for the '-s' option.
 216  */
 217 void
 218 show_score(void)
 219 {
 220         SCORE *scp;
 221         int inf;
 222
 223         if ((inf = open(Scorefile, O_RDONLY)) < 0) {
 224                 warn("opening `%s'", Scorefile);
 225                 return;
 226         }
 227
 228         read_score(inf);
 229         close(inf);
 230         inf = 1;
 231         printf("%5.5s %5.5s %-9.9s %-8.8s %5.5s\n", "Rank", "Score", "User",
 232             " ", "Level");
 233         for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 234                 if (scp->s_score > 0)
 235                         printf("%5d %5d %-8.8s %-9.9s %5d\n",
 236                             inf++, scp->s_score, scp->s_name,
 237                             scp->s_auto ? "(autobot)" :  "", scp->s_level);
 238 }